UPDATE: Home teams continued to dominate in Round 4 and Major League Soccer struck back, winning five of six games on Tuesday night. The only upset came with the Rochester Rhinos eliminating defending champion DC United 1-0 in a game that was delayed by more than 2 hours due to a major storm.

DC United will begin their Open Cup title defense on Tuesday night as one of six games on the menu. Can Major League Soccer right the ship after losing all three games last Saturday? Will we see more upsets on Tuesday with five more to come on Wednesday?

As always, use and follow the #USOC2014 hashtag on Twitter for all the latest updates from all six games. You can also follow TheCup.us at @USOpenCup.

The Fourth Round of the 2014 U.S. Open Cup will see the Rochester Rhinos host DC United at Sahlen’s Stadium in Rochester. The Rhinos, winners of the tournament in 1999, will face a tough test in the cup’s holders.

The 2013 MLS season for DC United was one to sweep under the rug. DC won just 3 games out of 34 and gathered an all-time league worst 16 points from its 3-24-7 and -37 goal differential.

2013’s US Open Cup was a different story, however. After going to penalties against Richmond Kickers in the Third Round, DC defeated New England Revolution (3-1), Philadelphia Union (3-1), and Chicago Fire (2-0) each by a two-goal margin. In the 2013 Cup Final, Lewis Neal scored a first-half stoppage time goal and United was able to hold on for the 1-0 victory on the road to lift the trophy.

DC already has more points in MLS this season than it managed in all of 2013 and is almost unrecognizable from last year’s squad. United has a 17 day break between fixtures in league play, which should provide proper rest time to DC’s players before and after June 17’s meeting in Rochester.

The Rhinos on the other hand are in the thick of USL PRO’s congested schedule. Rochester played last Wednesday night, at the StubHub Center against LA Galaxy II, but also travels to Peoria, AZ, to face Arizona United SC this weekend. After next Tuesday’s cup match, the Rhinos will host Dayton Dutch Lions on Friday, June 20 before traveling to Oklahoma City to play OKC Energy on the 22nd.

Rochester head coach Bob Lilley is no stranger to squad rotation to deal with competing in two campaigns. Lilley significantly shuffled his lineups against the Rhinos’ previous two opponents in the US Open Cup. The coach, who is in his second stint in charge of the Rhinos, made 9 changes to his starting lineup for Rochester’s 2-1 extra time victory over Western Mass Pioneers (PDL) in the Second Round. Rochester also needed an extra time to defeat PDL side Reading United AC in the Third Round but was able to extend its record against amateur clubs to 13-0-0 in this competition.

Even though the Rhinos were seemingly pushed to the brink by two PDL teams, don’t count Rochester out. 1999’s miracle campaign started out with a nervy 2-1 sudden death overtime win over the New York Freedoms (PDL). That year the Rhinos went on to beat the Chicago Fire, Dallas Burn, Columbus Crew, and ultimately the Colorado Rapids to win the title.

With a reputation as a giant-killer in this competition, Rochester hasn’t beaten an MLS side since 2009 when they beat Columbus en route to a semifinal exit at the hands of DC United. In the interceding years, Rochester has lost to Columbus, Chicago, Philadelphia, and New England.

What will this year’s Fourth Round meeting between the Rochester Rhinos and D.C. United hold? Will D.C.’s strong league form carry over to the Open Cup or will Rochester call upon history to defeat a quality MLS team at home in Sahlen’s Stadium?

For the second time in three years, a new Philadelphia Union manager will have to immediately prepare for the US Open Cup, and for the second time in as many years, the Union will have to take on its USL PRO affiliates, the Harrisburg City Islanders.

The US Soccer Federation has rules in place to keep affiliated teams from playing each other in the Open Cup, however, this only applies to teams that share an ownership stake. The City Islanders and the Union merely have a player loan and marketing agreements between the clubs, therefore, they are allowed to play each other. (Teams like the USL PRO’s LA Galaxy II and the Galaxy MLS team are not allowed to play each other until the final)

Exactly a week after relieving team manager John Hackworth of his duties, Philadelphia and new interim manager Jim Curtin take on the City Islanders in the Fourth Round of the 2014 US Open Cup. Two years ago, Hackworth led the Union to the Semifinals in Philadelphia’s first Open Cup appearance, defeating the City Islanders 5-2 along the way.

The Union are trying to resurrect what has been a dreadful season based on their lofty expectations at the beginning of the year. Harrisburg has already used this year’s Open Cup run to somewhat right the ship after a shaky start to its season.

The City Islanders currently sit in 11th out of 14 teams in USL PRO. However, after starting 1-4-1, Harrisburg downed Lehigh Valley United Sonic 4-0 in Round 2, and after several more league games and another Open Cup victory over the Baltimore Bohemians (PDL), sit at a more comfortable 3-6-3.

Harrisburg has become known as a giant-killer in the Open Cup, eliminating five MLS teams since 2007, but to do so this year, the City Islanders will have to defeat a motivated Union team looking to impress its new manager.

The Columbus Crew enter the 2014 Lamar Hunt US Open Cup against an Indy Eleven side looking to continue on with a successful run in the tournament and will be aiming to avoid the fate of the three MLS clubs who fell to Indy’s NASL brethren this past weekend. This will be the first match in official competition between the two midwestern clubs, who sit less than three hours apart.

Both teams are expecting sizable groups of their respective fanbases to make the trek to the game’s location at First Energy Stadium on the campus of the University of Akron.

The Eleven will be looking to continue their positive results in the Open Cup, where they earned a dominating 5-2 victory over the USL Pro’s Dayton Dutch Lions in the Third Round. In that match, Blake Smith had a star-making performance with three goals and two assists in the win before a strong home crowd of over 9,000 fans. Indy comes into the match having finished their inaugural NASL Spring Season winless (0-5-4) but ended on a positive note with a come-from-behind 3-3 draw against the Atlanta Silverbacks. The team has struggled defensively but can generate scoring, tonight they’ll face an MLS side who’s toward the bottom of MLS in goalscoring but is stronger defensively and will have its’ starting goalkeeper in net.

With the success the other NASL clubs have already had this round against MLS foes and the chance for Indy to build on their Open Cup win, the Eleven should come into the match with confidence they can get a result against the Crew.

The Crew enter the 2014 Open Cup with a 4-5-6 record in MLS and sit in sixth place in the Eastern Conference. Despite playing their last match 10 days ago and MLS taking a break due to the World Cup, the Columbus Dispatch reported the Crew are not expected to field a typical starting roster due to a number of injuries. Leading scorer Federico Higuian and midfielder Wil Trapp, amongst others, won’t be making the trip. Starting keeper Steve Clark is expected to play against the Eleven due to both of the backup keepers having injury issues.

The Crew have had a good amount of success in the Open Cup, winning the tournament in 2002 and reaching the finals in 1998 and 2010. In recent years, the Crew have suffered upsets two years in a row to USL PRO clubs at Crew Stadium (Richmond Kickers in 2011 and the Dayton Dutch Lions in 2012). But last season, the Crew would avenge the previous year’s loss to the Dutch Lions (in what would prove to be club legend Eddie Gaven’s last professional game when he suffered a torn ACL) before falling to the Chicago Fire in the Fourth Round.

This is the first time the Crew have played a home game in Akron. First Energy Stadium is the home to the Akron Zips soccer program, a perrenial power in college soccer and where Caleb Porter built a name for himself as a coach before taking the Portland Timbers job. A considerable amount of Zips players have gone on to play professionally, including the Crew’s Chad Barson, Ben Speas and Wil Trapp, all of whom played at least a couple seasons at Akron.

The winner of this match goes on to face the winner of tomorrow’s Chicago Fire/Pittsburgh Riverhounds match in next week’s Fifth Round.

One of Major League Soccer’s best Open Cup teams, FC Dallas, will kick off their 2014 campaign with an all-Texas matchup with the NASL’s San Antonio Scorpions coming to Frisco on Tuesday night. Dallas, who last won the Open Cup championship in 1997, have been one of the most consistent since then, despite not winning another title. They have the most Quarterfinal appearances (13), the second-most Semifinal appearances (7) among MLS clubs.

Last year, Dallas’ run came to an end in the Quarterfinals, where they fell 3-2 at home to the Portland Timbers. In league play, FC Dallas are 6-7-4, sitting in fourth place in the Western Conference. After beating Colorado 3-2, In their last match, they took a 2-0 lead into halftime in Portland, but saw it disappear as the Timbers rallied to tie the game at 2-2, giving each team a point. Dallas had started as one of the hottest teams in the league with a 5-1-1 record in the opening seven games, but the victory against Colorado is the only win in their last 10 games (1-6-3). There players are leading the scoring charge for FC Dallas with Blas Perez, Michel and Fabian Castillo each with five goals while goalkeepers Raul Fernandez and Chris Seitz have split time in goal.

After upsetting the Houston Dynamo and reaching the Fourth Round in their inaugural cup run in 2012, the Scorpions followed up by getting eliminated by a PDL team, FC Tucson last year. It looked like another amateur club was going to embarrass the NASL team this as they fell behind 2-0 to the North Texas Rayados (USASA), but the second half was a completely different affair. Substitute Walter Restrepo cut into the lead four minutes in and Sainey Touray added two to move in front by the 70th minute. Josue Soto secured the 4-2 win from the spot in the 76th as the Scorpions earned a date with FC Dallas.

Since the last round, the Scorpions wrapped up the Spring schedule portion of their NASL campaign, finishing third with a 5-2-2 record. They downed Indy Eleven 2-1 and played to a 2-2 draw against the Fort Lauderdale Strikers to finish three points back of Minnesota and two behind the New York Cosmos. They bring a little extra Open Cup experience to their roster as forward Danny Barrera was one of the stars of Cal FC, the amateur team that upset the Portland Timbers in 2012. He also was named TheCup.us Lower Division Player of the Tournament for his efforts.

Amongst all of the excitement of the World Cup, the Colorado Rapids and Orlando City SC prepare for their Fourth Round US Open Cup matchup in Commerce City, Colo. Tuesday night. The visiting Orlando City are eager to continue the wave of upsets that has dominated the Fourth Round headlines while the hosts Colorado will be eager to get revenge for the 3-1 beating they sustained at the Citrus Bowl in Orlando during last year’s tournament.

At the time of the Fourth Round draw the plot lines were endless. The Rapids knew that they were going to host a US Open Cup game for the first time in seven years with a chance of hosting a second should they advance. As the Third Round concluded and the early Forth Round games kicked off, chances of hosting the Tampa Rowdies led by former Rapids goalkeeper Matt Pickens and defender Anthony Wallace were dashed and a potential match up with regional rival Real Salt Lake in the Fifth Round went up in flames when they were eliminated by the Atlanta Silverbacks. Left for the Rapids, Orlando City SC; the team who dismantled the the Rapids in last years tournament.

Coach Adrian Heath’s Orlando City SC couldn’t be in better form as of late. Heath’s squad cruised past Ocala Stampede (PDL) and the Tampa Bay Rowdies (NASL) both by a score of 4-1 and currently hold a commanding lead in the USL PRO league standings. Their roster is packed with professional talent eager to secure a roster spot for the burgeoning club who will be making the leap to MLS next spring. Orlando’s defense is anchored by long time goalkeeper Miguel Gallardo, center back Brad Rusin and two highly touted homegrown defenders Tyler Turner and Tommy Redding. Their attack features former New York Red Bulls prospects Corey Hertzog and Austin da Luz as well as on loan MLS players Brian Span (FC Dallas) and Mikey Lopez (Sporting KC) and in-form Trinidad and Tobago international midfielder Kevin Molino.

Young talent is also the trademark of the Colorado Rapids. Head coach Pablo Mastroeni has one of the youngest rosters in MLS tied for third place in the Western Conference halfway through the MLS season. Currently on a mid-season summer break, the rested and well-rotated roster has seen numerous players step up and play important roles this season including Jamaican international DeShorn Brown, midfielder Jose Mari, homegrown winger Dillion Serna and captain Drew Moor. With depth and favorable schedule at his disposal, coach Mastroeni is hoping that this year the Rapids are able to make a deeper run then they have been able to in years past.

In addition to last year’s upset the Colorado Rapids have a long history of losing to lower division sides in the US Open Cup including then USL-1 Seattle Sounders in 2007, Minnesota Thunders in 2005, Pittsburgh Riverhounds in 2001, the Richmond Kickers in 2000 and the Rochester Rhinos in 1999 Final and 1996 Semifinals. That said, they have never lost a US Open Cup game hosted in the Centennial State (3-0-0) and are 9-13-0 overall in the national tournament all time with one second place finish (1999) to their name. The Rapids will look to turn over a new leaf as they are one of two MLS teams with a losing record in Open Cup play (New York Red Bulls). Orlando City has been very successful in the Open Cup in their four-year history with a 12-5-0 record, include two MLS upsets last year en route to a Quarterfinal finish.

Last year, the Timbers made their deepest run into the Lamar Hunt US Open Cup in the club’s history.

The year before? They would rather not talk about that (home loss to amateur side Cal FC).

If this weekend’s results are any indication, the Timbers will have to put their best foot (and starting XI) forward when they face the Orlando City U23s at Providence Park.

Each of MLS’ 16 US-based clubs enter tournament in Round 4 but three MLS clubs have already been eliminated by NASL teams: New York Red Bulls fell to the New York Cosmos, the Atlanta Silverbacks ousted Real Salt Lake, and Chivas USA lost to the Carolina Railhawks in a shootout. Only San Jose and Houston managed to survive the weekend.

Portland heads into MLS’ international break following Tuesday’s Open Cup match, so it’s expected they will hold little back, but with an Open Cup limit of only five international players, Portland may be in a scramble to cover the back line.

The Timbers are 4-4-8 in league play, putting them in sixth place in the Western Conference (Top 5 make playoffs) heading into the World Cup break. Portland has only lost one game since April 27 (4-1-4).

OCFC arrives in Portland coming off a draw against the Panama City Pirates on Sunday in league play. They made history by defeating the Jacksonville United (NPSL) in Round 1, giving the club their first Open Cup win in team history and snapping a tournament high winless streak at six games. They followed that up by eliminating their first professional team, edging USL PRO’s Charleston Battery in the longest penalty kick shootout in the Modern Professional era, 12-11. Look for the University of Tampa’s Tyler Blackwood to lead the charge, but also look for Romario Williams, a member of the Jamaican Under-17 team, to have an impact. They will likely be joined by Akron defender Victor Souto.